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UNITED sTATEs PATENT oEEIoE.

WELCOME A. POTTER, OF CRANSTON, RHODE ISLAND.

MODE OF IRE(rU'LA'.I.II|.\TG|k THE MOTION OF YARN-BEAIVIS IN POWER-LOOIVIS.

Specification of Letters Patent No. 475, dated November 23, 1837.

To all whom t may concern:

Be it known that I, WELCOME A. POTTER, of Cranston, in the county of Pro-vidence and State of Rhode Island, have invented a new and improved method of regulating the movement of yarn-beams in powerlooms, whereby the movements of the yarnbeams are so regulated as to produce fabrics of a regular and uniform thickness throughout; and I do hereby declare that the following is a full and exact description thereof.

Figure l, perspective view of the power loom A, A, ybeing the frame, B, lathe, and C, the breast beam. These, with various other parts of the loom, which do not dier from those in use, do notof course, require any particular description. Figs. 2 and 3, are sectional views of two modifications of the arrangement of my apparatus, one shown as at the left, and the other as at the right hand end of the loom.

In each of the figures when the same parts are represented, they are designated by the same letters of reference.

In Fig. 2, B, is the lathe, D, the spring reed, and E a lever extending down nearly as low as the bottom of the lathe sword. F, is the part of the lathe in which the bar slides, Gr, the bar, H a vertical shaft having a ratchet wheel I, on its lower, and the worm wheel J, on its upper end, which operates, by gearing, to give the requisite motion to the yarn beam. K, is the step of the vertical shaft, and L, a guide piece having a notch or inortise in it to receive and guide the bar G, which acts upon the ratchet wheel.

The following is the manner in which the bar Gr, receives its mot-ion from the spring reed. When the lathe advances forward, and brings the reed into contact with the cloth, the springing. of the reed throwsthe top of the lever E back, say from one eighth to one fourth of an inch, and as this works upon a fulcrum M, in the lathe, and its lower end passesinto a mortise, or slot at a, in the bar G, the lower end of the lever, bear- V ing against the fore end of this slot, draws the rod forward, by the back motion of `by any other force. y

its upper end; and the back` end of the bar G, then catches upon a tooth of the ratchet wheel, to which wheel it will give motion when the lathe is thrown back; this force is effected by the sword of the lathe coming into contact with a shoulder at b, thus forcing the bar back and turning the ratchet wheel; the shaft H then moving the yarn beam by means of suitable gearing from the worm wheel.

The foregoing description represents the bar G, as receiving its motion through the agency ofthe spring reed; but I sometimes communicate it through that of the spring whip roll, as shown in Fig.-8. The whip roll N, isrsupported by a bearing piece o, there being ra similarv one at its other end. The bearing piece 0, works on a fulcrum P, made fast to the frame of the loom, said bearing piece extending to about an equal distance from the fulcrum at each end. A spring a, acts upon the lower end of the bearing piece, for the purpose of holding it a in its proper position, when not acted upon I/Vhen the lathe vibrates forward, and the reed presses forcibly on the cloth, this has the effect of dra-wing the whip roll, forward and causing the lower end of the bearing piece to recede; from this lower end, a rod, or wire R, extends to a lever S, working on a fulcrum T, on the frame of the loom, its lower end passing into a mortise, or slot, in the bar Gr, which is operated upon in a manner similar to that of the lever E,

already described. In both cases this mortise or slot must be long enough to give play to G, without moving the levers E, Vor S.

What I claim as my improvement in the power loom is-KL The construction and conversion of the bar G, which construction and conversion determines the manner it is operated on by the leversE and S, and the manner it operates the perpendicular shaft H, as described.

VVELOOME A. POTTER.

Witnesses: v

CLEMENT HooTE, LINToN THORN. 

